#593: Admins can take user rights temporarily

[platal.git] / modules / core.php

<?php
/***************************************************************************
 *  Copyright (C) 2003-2006 Polytechnique.org                              *
 *  http://opensource.polytechnique.org/                                   *
 *                                                                         *
 *  This program is free software; you can redistribute it and/or modify   *
 *  it under the terms of the GNU General Public License as published by   *
 *  the Free Software Foundation; either version 2 of the License, or      *
 *  (at your option) any later version.                                    *
 *                                                                         *
 *  This program is distributed in the hope that it will be useful,        *
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of         *
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
 *  GNU General Public License for more details.                           *
 *                                                                         *
 *  You should have received a copy of the GNU General Public License      *
 *  along with this program; if not, write to the Free Software            *
 *  Foundation, Inc.,                                                      *
 *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *
 ***************************************************************************/

class CoreModule extends PLModule
{
    function handlers()
    {
        return array(
            '403'         => $this->make_hook('403', AUTH_PUBLIC),
            '404'         => $this->make_hook('404', AUTH_PUBLIC),
            'purge_cache' => $this->make_hook('purge_cache', AUTH_COOKIE, 'admin'),
            'get_rights'  => $this->make_hook('get_rights', AUTH_MDP, 'admin'),

            'valid.html'  => $this->make_hook('valid', AUTH_PUBLIC),
            'favicon.ico' => $this->make_hook('favicon', AUTH_PUBLIC),
        );
    }

    function handler_valid(&$page)
    {
        readfile($page->compile_dir.'/valid.html');
        exit;
    }

    function handler_403(&$page)
    {
        header($_SERVER['SERVER_PROTOCOL'] . ' 403 Forbidden');
        $page->changeTpl('403.tpl');
    }

    function handler_404(&$page)
    {
        global $platal;
        header($_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found');
        $page->assign('near', $platal->near_hook());
        $page->changeTpl('404.tpl');
    }

    function handler_favicon(&$page)
    {
        $data = file_get_contents(dirname(__FILE__).'/../htdocs/images/favicon.ico');
        header('Content-Type: image/x-icon');
        echo $data;
        exit;
    }

    function handler_purge_cache(&$page)
    {
        require_once 'wiki.inc.php';

        $page->clear_compiled_tpl();
        wiki_clear_all_cache();

        http_redirect(empty($_SERVER['HTTP_REFERER']) ? './' : $_SERVER['HTTP_REFERER']);
    }

    function handler_get_rights(&$page, $level)
    {
        if (S::has('suid')) {
            $page->kill('Déjà en SUID');
        }

        if (isset($_SESSION['log'])) {
            $_SESSION['log']->log("suid_start", "login by ".S::v('forlife'));
        }    
        $_SESSION['suid'] = $_SESSION;
        $_SESSION['perms'] = $level;

        pl_redirect('/');
    }
}

?>